fix(libretranslate): pin Python 3.12 for venv to ensure PyTorch compatibility

PyTorch versions below 2.5.0 don't provide wheels for Python 3.13 (cp313).
Debian 13 uses Python 3.13 by default, causing the installation to fail
with 'no wheels with a matching Python ABI tag'.

Use uv venv --python 3.12 to create the virtual environment with
Python 3.12, ensuring compatibility with all PyTorch versions.

Fixes libretranslate installation on Debian 13.

Author: MickLesk

ct/libretranslate.sh

@@ -29,7 +29,7 @@ function update_script() {
     exit
   fi
 
-  setup_uv
+  PYTHON_VERSION="3.12" setup_uv
 
   if check_for_gh_release "libretranslate" "LibreTranslate/LibreTranslate"; then
     msg_info "Stopping Service"
@@ -39,7 +39,7 @@ function update_script() {
     msg_info "Updating LibreTranslate"
     cd /opt/libretranslate
     source .venv/bin/activate
-    $STD pip install -U libretranslate
+    $STD uv pip install -U libretranslate
     msg_ok "Updated LibreTranslate"
 
     msg_info "Starting Service"

install/libretranslate-install.sh

@@ -32,7 +32,7 @@ $STD apt install -y \
   python3-icu
 msg_ok "Setup Python3"
 
-setup_uv
+PYTHON_VERSION="3.12" setup_uv
 fetch_and_deploy_gh_release "libretranslate" "LibreTranslate/LibreTranslate"
 
 msg_info "Setup LibreTranslate (Patience)"
@@ -42,7 +42,7 @@ if [[ -z "$TORCH_VERSION" ]]; then
   TORCH_VERSION="2.5.0"
 fi
 cd /opt/libretranslate
-$STD uv venv .venv
+$STD uv venv .venv --python 3.12
 $STD source .venv/bin/activate
 $STD uv pip install --upgrade pip setuptools
 $STD uv pip install Babel==2.12.1